Science Learning Modules Introduction to the Nervous System 1. The period after an initial stimulus when a neuron is NOT sensitive to another stimulus is the ____________. a) resting period b) repolarisation c) depolarisation d) absolute refractory period 2. The part of a neuron that conducts impulses away from its cell body is called a(n) _______________. a) axon b) dendrite c) neurolemma d) Schwann cell 3. Which ion channel opens in response to a change in membrane potential
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Practice Exam #4 – Chapters 12‚ 13‚ 14 & 15 1) What would normally be found within the central canal of the spinal cord? a) Blood b) Myelin c) Cerebrospinal fluid d) Air e) Gray matter 2) The filum terminale is a) The roots of spinal nerves hanging inferiorly from the end of the spinal cord in the vertebral column b) An indentation on the dorsal side of the spinal cored c) The tapered end of the spinal cord d) An extension of the pia mater that anchors the spinal cord to the coccyx
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The Universe Within By Neil Shubin In these three chapters one of the main points regularly discussed was climate; particularly cold climate and how it changes over time. In these chapters he discussed Louis Agassiz‚ who created the ice age theory‚ James Croll‚ who reasoned the ice age due to orbit and position of Earth‚ and Milutin Milankovitch‚ who used Croll’s idea and confirmed Agassiz’s. He also explained how because of Earth’s distance from the Sun and it’s angle Earth’s climate and ice ages
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trackers usually consist of a standard desktop computer with an infrared camera mounted beneath (or next to) a display monitor‚ with an image processing software to locate and identify the features of the eye used for tracking . The light enters the retina and a large proportion of it is reflected back‚ making the pupil appear as a bright‚ well defined disc. The corneal reflection is also generated by the infrared light‚ appearing as a small‚ but sharp . Image processing software can identify the center
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Genetic Information Tay Sachs is a devastating genetic disease. There are three different forms of the disease- Early Onset which emerges around three to six months of age‚ Juvenile which mainly appears between the ages of two and five but could start anytime in childhood‚ and Late Onset which mostly presents in adolescence or early adulthood but could occur at any time. Tay Sachs is caused by a mutation--a deletion of chromosome 15. The HEX A gene on this chromosome is responsible for creating
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Define psychophysics and summarize the contributions of Fechner and Weber. Psychophysics is the study of the relationship between physical stimuli and the behavior or mental experiences the stimuli evoke. Gustav Fechner was the most significant figure in history of psychophysics. He provided a set of procedures to relate the intensity of a physical stimulus (measured in physical units) to the magnitude of the sensory experience ( measured in psychological units). It has been determined that there
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body length of 18 inches. They use their tails to help them climb more efficiently. Lemurs are pretty light animals only weighing an average of 5 pounds. One the skills lemurs possess is great eye sight‚ they have a reflective layer behind their retina that increases their night vision (This is also found in cats and dogs). These animals also have claws similar to humans. They have thumbs and an opposable big toe that assists them in climbing and grooming themselves. Ring Tailed Lemurs only spend
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Each hemisphere of the brain also has a cingulate gyrus part of the limbic system Limbic system includes cingulate gyrus‚ amygdala‚ and hippocampus Emotion‚ learning‚ and memory Cerebral cortex consists of sensory‚ motor‚ and association areas Association areas integrate sensory data into perception Motor outputs control target tissues The noradrenergic system originates from the locus coeruleus in the pons Its axons terminate through the brain disseminates noradrenaline throughout
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Farah cabe Psychology 2010 Ch‚1‚2‚3 text Homework 6) Like Wilhelm Wundt’s structuralism‚ Sigmund Freud’s psychoanalytic theory emphasized C) menatal processes Study sets with a ’psychoanalytic theory’ term meaning ’a theory developed by freud that attempts to explain personality‚ motivation‚ and mental disorders by focusing on unconscious determinants of behavior. 12) Glial cells a) Form myelin Supporting elements‚ blood brain barrier‚ dilate blood vessels. oligodendrocyte and Schwann
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Introduction Diabetes mellitus is a group of metabolic diseases characterized by high blood sugar levels that result from defects in insulin secretion‚ or its action‚ or both. Diabetes mellitus‚ commonly referred to as diabetes which was first identified as a disease associated with "sweet urine‚" and excessive muscle loss in the ancient world. Elevated levels of blood glucose lead to spillage of glucose into the urine‚ hence the term sweet urine. The most common form of diabetes is Type II‚ It
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